edit prediction: Hide rate completions modal behind feature flag (#23597)

This hides the ability to rate completions behind the
`predict-edits-rate-completions` feature flag

Release Notes:

- N/A

crates/zeta/src/rate_completion_modal.rs

@@ -1,8 +1,10 @@
 use crate::{CompletionDiffElement, InlineCompletion, InlineCompletionRating, Zeta};
+use command_palette_hooks::CommandPaletteFilter;
 use editor::Editor;
+use feature_flags::{FeatureFlagAppExt as _, PredictEditsRateCompletionsFeatureFlag};
 use gpui::{actions, prelude::*, App, DismissEvent, Entity, EventEmitter, FocusHandle, Focusable};
 use language::language_settings;
-use std::time::Duration;
+use std::{any::TypeId, time::Duration};
 use ui::{prelude::*, KeyBinding, List, ListItem, ListItemSpacing, Tooltip};
 use workspace::{ModalView, Workspace};
 
@@ -22,10 +24,35 @@ actions!(
 pub fn init(cx: &mut App) {
     cx.observe_new(move |workspace: &mut Workspace, _, _cx| {
         workspace.register_action(|workspace, _: &RateCompletions, window, cx| {
-            RateCompletionModal::toggle(workspace, window, cx);
+            if cx.has_flag::<PredictEditsRateCompletionsFeatureFlag>() {
+                RateCompletionModal::toggle(workspace, window, cx);
+            }
         });
     })
     .detach();
+
+    feature_gate_predict_edits_rating_actions(cx);
+}
+
+fn feature_gate_predict_edits_rating_actions(cx: &mut App) {
+    let rate_completion_action_types = [TypeId::of::<RateCompletions>()];
+
+    CommandPaletteFilter::update_global(cx, |filter, _cx| {
+        filter.hide_action_types(&rate_completion_action_types);
+    });
+
+    cx.observe_flag::<PredictEditsRateCompletionsFeatureFlag, _>(move |is_enabled, cx| {
+        if is_enabled {
+            CommandPaletteFilter::update_global(cx, |filter, _cx| {
+                filter.show_action_types(rate_completion_action_types.iter());
+            });
+        } else {
+            CommandPaletteFilter::update_global(cx, |filter, _cx| {
+                filter.hide_action_types(&rate_completion_action_types);
+            });
+        }
+    })
+    .detach();
 }
 
 pub struct RateCompletionModal {